Publikationsdatum:
2018
Beschreibung:
〈p〉Publication date: 5 January 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 560〈/p〉
〈p〉Author(s): Roshan Nazir, Uttaran Basak, Surojit Pande〈/p〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉RuO〈sub〉2〈/sub〉 nanorod (NR), an efficient and stable catalyst for hydrogen and oxygen evolution reaction is developed via wet-chemical route. Initially, a carbon slurry has been prepared using glucose and urea via heating at 140 °C for 6 h. During the preparation of carbon slurry Ru〈sup〉3+〈/sup〉 salt has been added to disperse homogeneously. Finally, calcination at 500 °C for 10 h has been performed using homogeneously distributed Ru〈sup〉3+〈/sup〉 ion in carbon slurry to get RuO〈sub〉2〈/sub〉 NR. The synthesized RuO〈sub〉2〈/sub〉 NR has been well characterized using FESEM, TEM, PXRD, and XPS analysis. The average aspect ratio of a single RuO〈sub〉2〈/sub〉 rod is ∼4.37. The synthesized RuO〈sub〉2〈/sub〉 NR has been used extensively as an electrocatalyst for hydrogen and oxygen evolution reaction. RuO〈sub〉2〈/sub〉 NR shows cathodic potential of −130 mV vs. RHE to achieve current density of 10 mA/cm〈sup〉2〈/sup〉 during hydrogen evolution reaction. Whereas, for oxygen evolution 1.508 V vs. RHE is required to generate 10 mA/cm〈sup〉2〈/sup〉 current density. Electrochemically active surface area and Tafel slope have been calculated to exhibit better activity of RuO〈sub〉2〈/sub〉 NR as compared to commercial RuO〈sub〉2〈/sub〉. The overall electrocatalysis mechanism has also been discussed in detail.〈/p〉〈/div〉
〈h5〉Graphical abstract〈/h5〉
〈div〉〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S0927775718313189-ga1.jpg" width="250" alt="Graphical abstract for this article" title=""〉〈/figure〉〈/p〉〈/div〉
Print ISSN:
0927-7757
Digitale ISSN:
1873-4359
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
